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Hi guys, I didn´t find a case like that anywhere else (google and hear), and I know you will tell me is a problem related to airflow but it just doesn´t make sense.
The list of parts that I have changed trying to troubleshoot this problem goes from thermostats down to the e-fan itself.
The problem is that my car overheats, after 15 to 20 minutes, being parked, nor in traffic (not yet, knock on wood) just parked.
In short I discovered that if I open the hood, the temperatures lowers quite rapidly and goes to normal.
I have an aftermarket temp gauge installed on the intake manifold (there was a water connection to the heater but my car doesn´t have a heater so I thought it was a good place to put it.
The temps (while driving) don´t even go above 70ºC, they even go down to 40ºC if I go on the highway, the problem begins when I park the car; if I leave it running, the aftermarket gauge shows clearly how the water temp starts to rise up to the red zone (around 100ºC), funny thing is that while getting to that zone, the stock water temp doesn´t move yet, it takes around 5 min. to start moving from normal to high temp.
The things is, if I open the hood, all temps gauges go back to normal, even the hoses get smooth again (the get quite stiff when overheats).
So, after trying 2 aftermarket fans, and fan blades, 3 coolants brand, changing hoses and hoses clamps, and after checking if I blew the engine gasket (apparently not, thank god 🙂 ). I cannont find where is the problem.
The radiator is brand new, could it be that it maybe clogged? the whole system has been cleaned and purged several times.
Or maybe the radiator (single core BTW) is not enough for the engine and I should get a two core radiador?
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